Cork-rod baker



Dec. 25, y1923. 1,478,873

P. HRRICH CORK ROD BAKER Filed 06h25 1921 c v l Syvum/woz m s@ Ciwy/MAW' Patented Dec.25, 1923.

f UNITED rstarai-s- Laaste Partnr ortica.

kPAUL HARRICH, OF ROCHELLE PARK, NEV JERSEY, ASSIGNOR TO NEW PROCESS CORK COMPANY, OF BROOKLYN, NEW YORK, A CORPORATIONOF NEW YORK.

coax-Ron BAKER.

Ap'pncation sied otober 25, 1921. serial No. 510,370.

. Be it known that LPAUL HARRICH, a cit-v izen ofGerm'any, residingat Rochelle Park,

r and more particularly to a baker of this type wherein cork rods formed of granular cork and a binder which is set or vulcanized by heat will be so conditioned while still in the` metallic tubes as to facilitate the ejection of the rod from the tube.` v

` Cork rod bakers of thetype to which my invention relates are so constructed as to re-l ceive succeeding tubes or groups `of tubes havin packed therein granular cork, and a 'suitab e binder or adhesive which will set or vulcanizeunder heat, said tubes being sup-- ported by traveling carriers, which move them continuously through the oven for a V'sufficient time to ensure the proper setting, hardening or vulcanizing of the binder.

Theapplication of heat to fthe tubes and the contained cork composition, causes the expansion of the composition within the tubes, and the binder adjacent thesurface of the tube to have a tendency to adhere thereto, and thus interfere with the ejection of the rod fromy the enveloping tube.

To avoid this condition, I provide the baker adjacent the delivery end lthereof with means which will circulateabout the tubes, air at a materially lower temperature than that of the tubes and rods as they emerge from the oven and approach this point, causing a sudden drop of temperature superficially of the rod resulting in surface shrinkage thereof and a conditioning of the small volume ofbinder adjacent the wall of the tube so as to facilitate the pushing of therod fromthe tube.

By employing a baker embodyingmy invention,jthe tubesmay be removed directly therefrom and delivered to a cork rod ejector machine,thus permitting the subsequentV curing ofthe rods underconditions which vrhe reaches of such a chain conveyor are will ensure more throughout same. j

The invention consists primarily Vin a cork rod baker embodying therein an oven wherein a high temperature is maintained; means adapted to convey tubes'containing a `'coinposition formed of granular cork and a binder through said high temperature zone, cool air circulating means adjacent the delivery point for the tubes and guiding means for said first named means positioned beyond said oven and extending adjacent said air circulating means, whereby said tubes and their contents will` be vcooled after leaving the oven and before reaching the delivery point; and yin such other novel features of construction and combinationof parts as uniform conditionsv are hereinafterset forth and described, and

vsaid. views. I

In the accompanying drawings, I have shown merely the delivery 'end of the baker as the construction of the heating unit, and the charging end thereof is well known in this` art and nov detailed description thereof is required.

In such bakers,an oven is provided Vwhich is maintained` at the desired temperature to set, harden or vulcanize the binder in the composition, suitable chain conveyors passing in a tortuous path through this oven.

shown at t in the accompanying drawings, the chain conveyor having mounted thereon a sequence of tube carriers indicated-at o, which may be so constructedy as to each receive one ora' group of tubes, each tube being packed with the granular cork and its binder. Y v While the carriers are' progressing through the oven, the high temperature will cause the expansion of the composition,

which is tightlypacked in the tube before it is charged into the baker, this expansion having the threefold effect of forcing the entire volume of composition in the Vtube into close contact with thevwall thereof, .causing uniform density thereof anda-t the same time making Athe binder adhesive, andAv causing it to set, harden or vulcanize so that even though but a thin Vfilm thereof ris applied to each particle of the cork, there will be a sufficient adhesion of this binderv to the inside of the tube to interfere with the free withdrawal of the cork rod from the tube.'V

The final setting or hardening of the binder requires a lower temperature, as it ordinarily will remain adhesive, or atleast tacky so long as it remains at a high temperature.

To obviate this condition, I provide meansadapted to circulate air at normal temperatures, which ywould be materially below the temperature of the oven, about. the tubes conf atmosphere and undergo a curing action thereby.

qWhile varioustypes of' blowers orfans may be used for circulating the air, Ipreferably employ the type offan shown in the accompanying drawings, which consists of two oppositely disposedVV substantially lflat blades having a width approximating; that of the baker. These blades are mountedvv upon a shaft c which is rotated at high speed, the blades themselves beingI indicated at ci an e.

Upon the side of the shaft c away fromv the oven, I' provide an open topped housing f which will ensure slight compression of the air before its discharge against the tubes.

The carriers and their contained tubes g pass `in arvertical path between. the hous- Q ing and the oven, and by reason offthe slow travel of said carriers, they will be subjected tothe low temperature air for a Vsufficient interval to secure the desired superficial cooling of the rods. Y

The operation of the herein described baker is substantially as followszn- As the conveyor chains a, thevariouscarriers andV rods g emerge from thehigh temperature Zone of the oven, theypass in a vertical path, in fairly close proximity to the housing f and the fan blades al and e,

each of which will act to circulate air under low pressure about a sequence of carriers, thus causing a more or less gradual cooling of the tubes and the cork rods therein, since each carrier will ytravel at low speed for a distance of six feet or more while within the area through which the air is thus circulated. As a result, the cork rods contained injthe tubes will be so conditioned that any bond between same and the tubes may be readily broken and there will be no dragging action uponthe rod as it is forced from the tube.

lll

At the saine time' the tubes may be readily p handled by the operator at the delivery end of the machine and iffV desired transferredv directly from the baker to the cork rod ejector mechanism, whether hand or power op# erated. Y

It is not? my intention to limitthe invention to the precisel details' of construction shown in the accompanying drawings, it being'apn parent that such may be varied without de-v parting from, the spirit and lscope of the invention. Y 1

Having described the invention, what Il claim 'as new anddesire to' have protected by Letters Patent, is z- Vl'. A cork rod baker embodying therein an oven wherein a high temperature is main-` tained means adapted to convey Vtubes containing a compositionform'ed of granular cork and a binder through said high temperature zone, cool air circulatingv means adjacent the delivery point for thetubes and guidingmeans for saidv first named" means positioned beyond said ovenV and" extending adjacent said air circulatingV means, wherebyV said tubes and their contents will bev cooled after leaving the oven. and before reaching the delivery point. i 'Y ZA cork rod baker embodying therein an oven wherein a high temperature is Vmaintained means adapted .to convey tubes Y containing a composition formed; ofi granular cork'and a binder through said high teinperature zone, aV rotatable shaft' driven at high speed, and afplurality of fan blades carried thereby and extending transversely of the oven andV guiding means for 'saidlirst 'i named means positioned beyond said oven and extending adjacent said fan blades, whereby cool air is directedfagainst the tubes after they have left the high temperature Zone andas they approach theV delivery point. y l Y 3. A corkV Vrod` baker embodying therein an oven wherein ahigh temperature is maintained meansA adapted'y to convey tubes containing a composition'v formed'v of granular cork and a binder through saidf high temperature Zone, a rotatable shaft dri-ven at high speed, a 'pluralityrof fan blades` carried thereby and Vextending' transversely' of theoven an ope-n topped housing'infwhich air is adaptedto be placed under low compression by said fan blades successively In Witness whereof I have hereunto affixed priorto its delivery adjacent said tubes and my signature, in the presence of two sub 10 guiding means for said first named means soribing Witnesses, this 6th day of October positioned beyond saidoven and extending 192l.

adjacent the outlet` of said housing, whereby y y PAUL HARRICH.

cool air is directed against the tubes after Witnesses: they have left the oven and as they apr FRIEDA KOEHLER,

proach the delivery point. SOrHIE M. BAEDER. 

